| Career (United States) | |
|---|---|
| Name: | USS Emerald |
| Namesake: | The emerald, a green gem stone |
| In service: | 1864 |
| Out of service: | 1883 |
| General characteristics | |
| Type: | Ferry boat |
| Propulsion: | Steam engine |
The first USS Emerald was steam yacht that served in a non-commissioned status as a ferry boat at the Portsmouth Navy Yard at Kittery, Maine, from 1864 to 1883.